MongoDB basics

// Enter Mongo
Access `C:\Program Files\MongoDB\Server\4.2\bin` via CMD

// Enter mongo mode
mongo

// Show databases
show dbs

// Create and switch to database
use authors

// Show all collections in a database 
show collections

// Create collection
db.createCollection("authors");

//Insert
db.authors.insert({first_name: "Mary", last_name: "Poppins", email: "[email protected]", password:"bEHPBQwE"});

//update one document (entry)
db.authors.update({'first_name':'*'},{$set:{'password':'bEHPBQwE'}});

//update o set of records, matching a criteria
// in this case publication date less then 2014-07-19T22:00:00.000Z
db.posts.updateMany({ "created_at": { $lt: "2014-07-19T22:00:00.000Z" }},{ $set: {full_text: "Lorem ipsum dolor sit amet"}});

// Find records in collection
db.authors.find();
db.authors.find().pretty();

//Find One 
 db.authors.findOne({'first_name':'Mary'});
 
 // Count documents in a collection
 db.posts.count();
 
 // Delete all documents (records) in a collection
 db.authors.remove({})